摘要：Zn(s)+1/2O2;ΔH=-348.3 kJ/mol +1/2O2;ΔH=-31.0 kJ/mol则Zn+2Ag A.-317.3 kJ/mol B.-379.3 kJ/mol C.-332.8 kJ/mol D.+317.3 kJ/mol

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